Passage Data · Check a report · Use it from your AI

Evans Construction Company

Construction Sand And Gravel, Bondurant, Wyoming. NPDES permit WY0097034, in force until Jan 31, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 28 days after each period: form GW quarterly
Last report on file: June 2026

Limits in force (8)

Parameter	Statistic	Limit	Months
pH	instantaneous minimum	≥ 6.5 SU	all year
pH	instantaneous maximum	≤ 9 SU	all year
Solids, total suspended	monthly average	≤ 30 mg/L	all year
Solids, total suspended	weekly average	≤ 45 mg/L	all year
Duration	monthly total	report only (d/mo)	all year
Flow	monthly average	report only (MGD)	all year
Flow	daily maximum	report only (MGD)	all year
Produced water, oil and grease	daily maximum	≤ 10 mg/L	all year

How strict are these limits?

Solids, total suspended, monthly average 30 mg/L — stricter than 25% of 80 other minor industrial and other permits in Wyoming; 53% have the same limit

Cited limits by parameter: Wyoming's rules and the federal ones.

Same industry: the 8 Mining and Quarrying of Nonmetallic Minerals permits in Wyoming.

Check this month's numbers Email me before each report is due

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/WY0097034 · MCP: https://passage-data.com/mcp